The ceramic production and purification equipment of the present invention comprises a first fuselage, a furnace is fixedly arranged on the right end surface of the first fuselage, a cavity is provided in the first fuselage, and a top surface of the first fuselage is provided. A fixed block is fixedly fixed, and a feeding slot with an upward opening is provided in the fixed block. The device of the present invention can purify the ceramic before melting and casting. Compared with the traditional purification equipment, the device can remove iron impurities more thoroughly and the produced ceramics have higher purity. The equipment can also remove other impurities, while the operation is simple and clear, convenient and fast. In addition, the equipment can screen fine ceramic powder for melting, reducing the time required for melting ceramic powder, and the equipment has high purification efficiency.

A method for heating ware in a kiln. The ware space of the kiln includes a plurality of temperature control zones oriented in a first direction, and a plurality of temperature control zones oriented in a second direction. The method includes heating the ware space in a first heating stage, a second heating stage, and a third heating stage. At least one of the following conditions is satisfied: (i) in one of the heating stages, a temperature control zone oriented in the first direction has a setpoint temperature that is different from a setpoint temperature of one other temperature control zone oriented in the first direction; and (ii) in one of the heating stages, one temperature control zone oriented in the second direction has a setpoint temperature that is different from a set point temperature of one other temperature control zone oriented in the second direction, wherein the first direction is a vertical direction and the second direction is a horizontal direction.

A refractory article can include a socket including a cavity that is configured to receive a post, a particulate material, and a binder. The binder is configured to bond the post to the socket. The refractory article can include a sleeve coupled to the socket and configured to bond the post to the socket. In an embodiment, the sleeve can bond to the binder. In another embodiment, a collar can be placed between the sleeve and the binder. The collar can be configured to bond the post to the socket. A method of forming a refractory article can include disposing a particulate material within a cavity of a socket and placing a binder material overlying the particulate material.